| Overview |
| ======== |
| The freertos_ecspi_loopback demo shows how the ecspi do a loopback transfer internally in FreeRTOS. |
| The ECSPI connects the transmitter and receiver sections internally, and the data shifted out from the |
| most-significant bit of the shift register is looped back into the least-significant bit of the Shift register. |
| In this way, a self-test of the complete transmit/receive path can be made. The output pins are not affected, |
| and the input pins are ignored. |
| |
| Toolchain supported |
| =================== |
| - IAR embedded Workbench 8.50.1 |
| - GCC ARM Embedded 9.2.1 |
| |
| Hardware requirements |
| ===================== |
| - Micro USB cable |
| - MCIMX8MQ6-EVK board |
| - J-Link Debug Probe |
| - 12V power supply |
| - Personal Computer |
| |
| Board settings |
| ============== |
| No special settings are required. |
| |
| |
| Prepare the Demo |
| ================ |
| 1. Connect 12V power supply and J-Link Debug Probe to the board, switch SW701 to power on the board |
| 2. Connect a USB cable between the host PC and the J1701 USB port on the target board. |
| 3. Open a serial terminal with the following settings: |
| - 115200 baud rate |
| - 8 data bits |
| - No parity |
| - One stop bit |
| - No flow control |
| 4. Download the program to the target board. |
| 5. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo. |
| |
| Running the demo |
| ================ |
| If the demo run successfully, the below log will be print in the terminal window: |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| ***FreeRTOS ECSPI Loopback Demo*** |
| |
| This demo is a loopback transfer test for ECSPI. |
| The ECSPI will connect the transmitter and receiver sections internally. |
| So, there is no need to connect the MOSI and MISO pins. |
| |
| FreeRTOS ECSPI loopback test pass! |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| Customization options |
| ===================== |
| |
